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2019 Acura Tlx

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2019 Acura Tlx do not stand out strongly from the model-year median of 65.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

23 reports with mileage · 69 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Engine. Review the 31 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

7 crash reports1 fire reports3 injury reports

Power Train complaints

11 reports
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Mileage unknown · May 27, 2026
EngineFuel/propulsion SystemPower Train

I am formally requesting a neutral third-party arbitration review under the Magnuson-Moss Warranty Act to compel American Honda Motor Co. to provide a permanent mechanical remedy—specifically, the sourcing and installation of a brand-new, redesigned engine assembly (Engine #Four)— This vehicle frame is now on its third engine bl…

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I am formally requesting a neutral third-party arbitration review under the Magnuson-Moss Warranty Act to compel American Honda Motor Co. to provide a permanent mechanical remedy—specifically, the sourcing and installation of a brand-new, redesigned engine assembly (Engine #Four)— This vehicle frame is now on its third engine block. Car was bought 11/30/2024. At Grubbs Acura, fuel pump safety recall that involves flashing/re-calibrating the Engine Control Unit (FI-ECU) software was done. Just a few weeks after new fuel pump, the vehicle displayed sudden stalling symptoms. The engine suffered a terminal, catastrophic internal collapse. The vehicle was towed to Grubbs Acura where Corporate Honda directed a forced out-of-pocket internal engine teardown. The physical teardown explicitly confirmed a catastrophic connecting rod bearing failure (spun bearing) identical to the structural manufacturing flaws currently under active federal investigation by the NHTSA under Preliminary Evaluation PE25008 / RQ24-025. Corporate Honda subsequently issued a verbal agreement to fully reimburse my out-of-pocket teardown fees. Because a manufacturer will never fund diagnostic labor if evidence of owner fault is present, this corporate reimbursement serves as formal validation that no owner maintenance neglect occurred, and that the engine died exclusively from an inherent component defect. Gunn Acura (San Antonio, TX) confirmed with my vin, that Engine #3 was a warranty/dealer-installed replacement unit at 22,000 miles. It failed after less than 40,000 miles of total operation. A professionally manufactured and dealer-installed engine is reasonably expected to last well beyond 40,000 miles. The manufacturer network cannot utilize arbitrary part-ownership rules or uncooperative, fragmented dealer communications. The original factory-installed engine and the dealer-installed replacement engine both suffered identical connecting rod bearing failures.

NHTSA ODI #11740358

Mileage unknown · Mar 19, 2026
Power Train

I am filing a formal safety complaint regarding the execution of NHTSA Recall 24-002 (Connecting Rod Bearing Replacement) by an authorized Acura dealership, and a fundamental safety flaw in Acura’s official Service Bulletin for this recall. My vehicle underwent "Repair #1" under this recall, which involved opening the engine bl…

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I am filing a formal safety complaint regarding the execution of NHTSA Recall 24-002 (Connecting Rod Bearing Replacement) by an authorized Acura dealership, and a fundamental safety flaw in Acura’s official Service Bulletin for this recall. My vehicle underwent "Repair #1" under this recall, which involved opening the engine block and replacing the rod bearings due to a factory defect that causes metal-on-metal wear. However, upon picking up my vehicle, I discovered the dealership left the old, dirty oil filter attached to the engine. I reviewed Acura’s Service Bulletin 24-002 and realized the "Required Materials" list explicitly omits a new oil filter for Repair #1. Because dealerships strictly follow this bulletin for warranty reimbursement, they are systematically leaving old filters on engines that just received new bearings. This means old, metal-contaminated oil trapped in the filter is immediately recirculated through the brand-new precision bearings. This procedural flaw directly jeopardizes the integrity of the engine, completely undermining the purpose of the safety recall and putting drivers at risk of sudden engine failure at highway speeds. I have time-stamped video and photographic evidence of my vehicle’s mileage (61,325) and the untouched, original oil filter immediately after returning home from the dealership. Acura Corporate was contacted regarding this procedural negligence and failed to provide a resolution. I am requesting the NHTSA investigate Acura's repair procedures for Recall 24-002 to prevent further unsafe vehicle modifications.

NHTSA ODI #11725629

Mileage unknown · Nov 6, 2025
EnginePower Train

In 2022, my 2019 Acura TLX A-Spec received a warranty engine replacement due to a spun bearing. At that time, recall 23V-751 (connecting rod bearing defect) did not yet exist. Recently, the replacement engine developed a pronounced knocking/ticking noise at idle and during light acceleration. Multiple independent mechanics and a…

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In 2022, my 2019 Acura TLX A-Spec received a warranty engine replacement due to a spun bearing. At that time, recall 23V-751 (connecting rod bearing defect) did not yet exist. Recently, the replacement engine developed a pronounced knocking/ticking noise at idle and during light acceleration. Multiple independent mechanics and an Acura service department confirmed the noise is abnormal and consistent with connecting rod bearing wear as described in the recall. Acura advised that my VIN is not included in the recall because the original engine was replaced. However, the replacement engine was supplied by Acura prior to the recall and may contain the same defective components. The dealership and Acura corporate did not inspect the internal components or verify whether the replacement engine used the revised bearing parts — they only referenced the VIN and engine number to deny recall eligibility. I currently have an open case with Acura, and the vehicle is scheduled for diagnostic inspection. I was informed that if the issue is determined to be related to recall 23V-751, diagnostic costs may be reimbursed, but there is no guarantee. This situation raises concern because my symptoms, timeline, and component failure are consistent with the known defect, yet my vehicle remains excluded from coverage. Given the safety implications of possible engine seizure or loss of power while driving, I am requesting that NHTSA review whether vehicles with Acura-supplied replacement engines should also fall under recall 23V-751. All service records and warranty history with Acura are available for review upon request.

NHTSA ODI #11697869

Mileage unknown · Jul 23, 2024
Power TrainSuspension

This car exhibits rumbling when goinin to a decreasing downward motion as if its trying to change gear but cant. coming home from a doctors appointment last month it was raining an coming up to the top of a very small hill and just as i hit the top at the point the shocks start to lift up I almost lost control. This is not the f…

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This car exhibits rumbling when goinin to a decreasing downward motion as if its trying to change gear but cant. coming home from a doctors appointment last month it was raining an coming up to the top of a very small hill and just as i hit the top at the point the shocks start to lift up I almost lost control. This is not the first time its happened. It usually happens in a decelerating turn. but I have tried to get appointments with Huntsville and nashvile dealerships. Hunstville had my appointment i waited for for 4 months and it was around june the 14th and they told me not to come in they were out of parts. So they had parts but ran out!

NHTSA ODI #11603947

Mileage unknown · Feb 7, 2024
EnginePower Train

Engine failure due to spun rod bearing due to the rod bearing connection failing. Vehicle suddenly became completely immobile stopping on a busy road in the city during morning rush hour. Vehicle not only put me in danger, but many other drivers on the road because it stopped halfway into the street refusing to go forward or s…

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Engine failure due to spun rod bearing due to the rod bearing connection failing. Vehicle suddenly became completely immobile stopping on a busy road in the city during morning rush hour. Vehicle not only put me in danger, but many other drivers on the road because it stopped halfway into the street refusing to go forward or shift to neutral to be pushed up. There were no electrical or battery issues. Yes, the dealership has acknowledged there is a recall that has not come out yet on the rod bearing connection as well as letters from Acura regarding this problem. Yes, Acura dealership service center has inspected the vehicle with no solution proposed or a diagnosis even. No warning lights until the engine completely failed. There was a rattling/tickling sound for a few days prior to my appointment to get it checked out. The rattling grew faster upon pressing on the gas while parked and accelerating while driving. The vehicle’s engine failed on my way to the service center. The profession was very quickly on a Monday the rattling began it was driven less than 10 miles daily until the engine completely failed on Friday which was the first available service appointment.

NHTSA ODI #11570449

Mileage unknown · Apr 18, 2023
Power Train

I leased a new Acura TLX vin [XXX] from Hall Automotive Virginia Beach in April 2019. After about 3 years the lettering on the drive gear selector button started wearing off when the car had about 12000 miles and was still under its 4 year factory warranty. I have been very careful with my car and did not expose it to any chemic…

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I leased a new Acura TLX vin [XXX] from Hall Automotive Virginia Beach in April 2019. After about 3 years the lettering on the drive gear selector button started wearing off when the car had about 12000 miles and was still under its 4 year factory warranty. I have been very careful with my car and did not expose it to any chemicals that would cause this (and this has never happened on any of my other vehicles). During the warranty period I took the car to 2 different Acura dealers (Hall Acura and Priority Acura Chesapeake VA) who both said that Acura would not replace it under warranty. I also called Acura who told me to go to a dealer which I had already done. This is a potential safety hazard as it could make it more difficult to put the car into gear. I searched for this issue online and found that this has been a recurring problem on Honda Acura models.: https://www.driveaccord.net/threads/white-part-of-lettering-on-10at-gear-selector-panel-has-worn-off-the-button-now-what.538337/page-2 Please make Acura replace these with more durable lettering on all affected vehicles. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA ODI #11517765

45,000 miles · May 16, 2022
Power Train

The contact owns a 2019 Acura TLX. The contact stated while driving approximately 45-50 MPH, the vehicle inadvertently shifted into neutral causing the vehicle to slow down and stop in traffic. The contact was able to pull over and call a tow truck to take the vehicle to the dealer. The vehicle was not diagnosed or repaired. The…

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The contact owns a 2019 Acura TLX. The contact stated while driving approximately 45-50 MPH, the vehicle inadvertently shifted into neutral causing the vehicle to slow down and stop in traffic. The contact was able to pull over and call a tow truck to take the vehicle to the dealer. The vehicle was not diagnosed or repaired. The contact stated that the emissions warning light was illuminated. The manufacturer was not notified of the failure. The approximate failure mileage was 45,000.

NHTSA ODI #11464775

Mileage unknown · May 19, 2021
Power Train

I was pulling on to interstate 5 when attempting lane change I accelerated with no success. The gas pedal was pressed harder and still no acceleration and that went on for at least 3 to 4 seconds. This happens to me every day. I have tried different brands of fuel but always premium and that has made no changes. The vehicle had …

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I was pulling on to interstate 5 when attempting lane change I accelerated with no success. The gas pedal was pressed harder and still no acceleration and that went on for at least 3 to 4 seconds. This happens to me every day. I have tried different brands of fuel but always premium and that has made no changes. The vehicle had a fuel system recall which made little if any improvement when it was performed over a year ago.

NHTSA ODI #11417766

22,000 miles · Oct 11, 2020
Fuel/propulsion SystemPower Train

WHEN I BACK OUT OF SOMEWHERE AND SELECT `DRIVE' ON THE TRANSMISSION THERE IS A DELAY OF 2 SECONDS TO 5 SECONDS BEFORE IT ENGAGES IN 'DRIVE' .THAT IS A LONG TIME WHEN A PERSON IS PULLING OUT ON AN ARTERIAL. THE ACCELERATION IWHEN IN 'DRIVE' IS NOT CONSISTENT WITH A SIMILAR HESITATION. FROM THE TIME THE ACCELERATOR HAS BEEN PRESS…

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WHEN I BACK OUT OF SOMEWHERE AND SELECT `DRIVE' ON THE TRANSMISSION THERE IS A DELAY OF 2 SECONDS TO 5 SECONDS BEFORE IT ENGAGES IN 'DRIVE' .THAT IS A LONG TIME WHEN A PERSON IS PULLING OUT ON AN ARTERIAL. THE ACCELERATION IWHEN IN 'DRIVE' IS NOT CONSISTENT WITH A SIMILAR HESITATION. FROM THE TIME THE ACCELERATOR HAS BEEN PRESSED IT COULD BE 2 TO 5 SECONDS BEFORE IT BEGINS TO MOVE. IT HAS BEEN TERRIFYING WHEN MERGING ON TO THE FREEWAY OR SIMPLY JUST PULLING OUT ON ANY ROADWAY.THE TRANSMISSION SEEMS SLUGGISH WHEN GOING FROM DRIVE TO REVERSE ALSO BUT THAT IS NOT GOING TO CAUSE AN ACCIDENT LIKE NOT BEING ABLE GO FORWARD IS. THIS HAD A RECALL ON FUEL PUMP PROGRAMMING AND THAT MADE LITTLE OR NO IMPROVEMENT. I HAVE ACURA INVOICES AND FILM THAT I HAVE TAKEN ON ANOTHER DEVICE THAT CAN BE PROVIDED.

NHTSA ODI #11363827

3,900 miles · Jun 23, 2019
EnginePower TrainUnknown Or Other

MY CAR STALLED FOR THE SECOND TIME ON JUNE 12, 2019. FIRST TIME WAS MARCH 31, 2019. SINCE I ALREADY GOT THE RECALL NOTICE (NHTSA RECALL 19V-060) BEFORE THE FIRST TIME, I TOOK IT TO THE DEALER AND THEY SAID THEY FIXED THE ISSUE BY DOING A SOFTWARE UPDATE. HOWEVER, EVEN AFTER THE SOFTWARE UPDATE, IT STALLED AGAIN ON JUNE 12TH,…

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MY CAR STALLED FOR THE SECOND TIME ON JUNE 12, 2019. FIRST TIME WAS MARCH 31, 2019. SINCE I ALREADY GOT THE RECALL NOTICE (NHTSA RECALL 19V-060) BEFORE THE FIRST TIME, I TOOK IT TO THE DEALER AND THEY SAID THEY FIXED THE ISSUE BY DOING A SOFTWARE UPDATE. HOWEVER, EVEN AFTER THE SOFTWARE UPDATE, IT STALLED AGAIN ON JUNE 12TH, 2019. IT LOOKS LIKE EITHER A NEW ISSUE OR THEIR SOFTWARE UPDATE DID NOT FIX IT. THERE IS ALSO A POSSIBILITY OF THE UPDATED SOFTWARE HAVING NEW BUGS. IN MY CAR, THE ISSUE COULD BE WITH THE COMPUTER, OR OTHER ELECTRONICS OR MECHANICAL DEFECTS WHICH ACURA HAS NOT BEEN ABLE TO FIND OUT DURING MY SEVERAL VISITS TO THEIR SERVICE. THIS IS BECAUSE MOST OR ALL FEATURES OF THE CAR HAVE BEEN MALFUNCTIONING EVERSINCE I LEASED IT. ANOTHER BIG ISSUE IS, APPARENTLY, THE CAR COMPUTER DID NOT RECORD THE STALLING THAT HAPPENED ON MARCH 31ST. THEREFORE, IT LOOKS LIKE MY CAR HAS A BIGGER ISSUE THAN JUST SOFTWARE. THE CAR (2019 ACURA TLX) HAS NUMEROUS ISSUES EVER SINCE I LEASED IT IN SEPTEMBER 2018 AND THEY ALL CONTINUE. I HAVE TAKEN IT TO THE DEALER SEVERAL TIMES AND NONE OF THE ISSUES HAD BEEN FIXED. ALL FEATURES ON THE CAR MALFUNCTION AND CAUSE DISTRACTION WHILE DRIVING. THE SAFETY FEATURES NOT ONLY DON'T SERVE THE PURPOSE OF SAFETY, BUT MALFUNCTION INSTEAD CAUSING DISTRACTION AND ARE VERY UNSAFE. THE CAR WOULD HAVE BEEN SAFER WITHOUT THESE MALFUNCTIONING SAFETY FEATURES. ACURA HAS NOT FIXED ANY OF THESE MALFUNCTIONS, ALTHOUGH I HAVE VISITED THE DEALER SEVERAL TIMES. TO TOP THAT THE CAR STALLED TWICE WHICH IS EVEN MORE SERIOUS. ALTHOUGH, MY APPOINTMENT IS FOR 6/24/19 (I COULD NOT GET AN EARLIER ONE SINCE THEY DON'T SEEM TO TAKE IT SERIOUSLY), THE CUSTOMER SERVICE REP CALLED ME A FEW DAYS AFTER SCHEDULING IT AND SAID SHE DID NOT EXPECT IT TO HELP. I WILL STILL KEEP THE APPOINTMENT, EVEN THOUGH THE REP INDICATED THIS STALLING WILL BE DISMISSED AS NOTHING.

NHTSA ODI #11222008

Official recalls

6

26V332000 · Air Bags:sensor:occupant Classification:front Passenger

May 21, 2026

Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

Consequence & remedy

Consequence: Air bags that deploy unintentionally during a crash increase the risk of injury.

Remedy: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed July 7, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are BOL, WO9, OOA, WOM, XOH, NOC, POD, BOE, UOF, POB, EOG, AOI, QO8, TOJ, DO7, and SOK. This recall expands previous NHTSA recall number 24V064. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning May 29, 2026.

23V858000 · Fuel System, Gasoline:delivery:fuel Pump

Dec 18, 2023

Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.

Consequence & remedy

Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.

23V751000 · Engine And Engine Cooling:engine:hard Parts Internal/mechanical

Nov 13, 2023

Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a manufacturing error, the connecting rod bearing in the engine may wear and seize, damaging the engine.

Consequence & remedy

Consequence: A damaged engine may run improperly or stall while driving, increasing the risk of a fire, crash, or injury.

Remedy: Dealers will inspect and repair, or replace the engine as necessary, free of charge. Owner letters were mailed March 28, 2024. 2016-2017 Acura MDX owner letters were mailed November 1, 2024. 2016-2020 Acura MDX owner letters are expected to be mailed in mid-December 2024. Honda began mailing owner notification letters as of March 18, 2024. 2015-2016 Acura owner letters are expected to be mailed mid-December 2024, 2018 Acura TLX owner letters are expected to be mailed the end of March/early April 2024, 2019 Acura TLX owner letters are expected to be mailed mid-May 2024, 2020 Acura TLX owner letters are expected to be mailed mid-June 2024, and 2016-2020 Acura MDX owner letters are expected to be mailed January 27, 2025. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XG1 and GG0.

21V215000 · Fuel System, Gasoline:delivery:fuel Pump

Mar 25, 2021

Honda (American Honda Motor Co.) is recalling certain 2019-2020 Acura MDX, MDX Sport Hybrid, RDX, TLX, Honda Accord, Civic Hatchback, Insight, 2019 Acura ILX, Honda Accord Hybrid, Civic Coupe, Civic Coupe Si, Civic Sedan, Civic Sedan Si, Civic Type R, Fit, HR-V, Odyssey, Passport, Pilot and Ridgeline, and 2018-2019 CR-V vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Consequence & remedy

Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Remedy: Honda will notify owners, and dealers will replace the fuel pump assembly, free of charge. Owner letters were mailed May 18, 2021. Owners may contact Honda customer service at 1-888-234-2138. Note: This recall is an expansion of recall 20V-314.

19V298000 · Engine And Engine Cooling:engine:gasoline:belts And Associated Pulleys

Apr 12, 2019

Honda (American Honda Motor Co.) is recalling certain 2018-2019 Acura MDX and Honda Pilot vehicles and 2019 Acura RLX, RLX Sport Hybrid, TLX and Honda Odyssey and Ridgeline vehicles. The timing belt teeth may separate from the belt.

Consequence & remedy

Consequence: Teeth separation from the timing belt may result in an engine stall, increasing the risk of crash.

Remedy: Honda will notify owners, and dealers will inspect the vehicle and replace any affected timing belt free of charge. Vehicles receiving a replacement timing belt will also have the engine inspected and any damaged components will be replaced for free. The recall began June 7, 2019. Honda owners may contact customer service at 1-888-234-2138. Honda's number for this recall is L4M. Acura owners may contact customer service at 1-888-234-2138. Acura's number for this recall is Z4L.

19V060000 · Fuel System, Other:delivery:fuel Pump

Jan 29, 2019

Honda (American Honda Motor Co.) is recalling certain 2016-2018 Acura MDX, 2015-2019 Acura TLX and 2015-2017 Honda Accord vehicles, equipped with a 3.5L V6 engine. Particulates in fuel may adhere to the internal components of the fuel pump, reducing its performance.

Consequence & remedy

Consequence: Reduced fuel pump performance can result in an engine stall, increasing the risk of crash.

Remedy: Honda will notify owners, and dealers will update the fuel injection engine control unit (FI-ECU) software and, if necessary, replace the fuel pump, free of charge. The recall began March 25, 2019. Owners may contact customer service at 1-888-234-2138. Acura's recall number for this recall is P3W. Honda's recall number for this recall is N3X.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

3

PE25008 · Engine Failure

Opened Aug 20, 2025 · No close date supplied

Status: open (inferred from source dates) · Engine

The Office of Defects Investigation (ODI) has received 414 reports of connecting rod bearing failures in the 3.5L V6 engine used in the following vehicles: Model Years (MY) 2018-2020 Acura TLX, MY2016-2020 Acura MDX, MY2016-2020 Honda Pilot, MY2018-2020 Honda Odyssey, and MY2017-2019 Honda Ridgeline.  The subject engine failures were analyzed as part of a Recall Query (RQ24013).  It was determined that these engine failures are outside the scope of Honda Recall 23V-751. Further, evidence gathered in conjunction with RQ24013 does not suggest this failure is caused by the same crankshaft manufacturing defect that is addressed by Honda in Recall 23V-751.  Based on analysis of data from RQ24013, NHTSA has closed that investigation. The significant number of reports of engine failure in vehicles outside the scope of RQ24013 presents a potential safety risk that warrants further investigation.  ODI is opening this Preliminary Evaluation (PE) to further evaluate the scope and severity of the potential problem and to fully assess the potential safety-related issues.  To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

EA25004 · No Restart After Auto Start/stop Engages

Opened Mar 26, 2025 · No close date supplied

Status: open (inferred from source dates) · Engine And Engine Cooling:engine; Engine And Engine Cooling:engine:crank/camshaft Position Sensor; Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software; Engine And Engine Cooling:engine:hard Parts Internal/mechanical

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Additional source detail variants (4)

Engine And Engine Cooling:engine:crank/camshaft Position Sensor

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Engine And Engine Cooling:engine:hard Parts Internal/mechanical

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Engine And Engine Cooling:engine

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

RQ24013 · Engine Failure

Opened Nov 8, 2024 · Closed Aug 20, 2025

Status: closed (inferred from source dates) · Engine

On November 8, 2024, the Office of Defects Investigation (ODI) opened Recall Query RQ24013 to assess the scope of Honda recall 23V-751 after receiving complaints that alleged connecting rod bearing failures in vehicles that were not within the scope of recall 23V-751. In November 2023, Honda recalled 248,999 various Model Year (MY)2016–2020 Honda and Acura vehicles equipped with the 3.5L V6 engine. Honda recalled these vehicles due to a crankshaft manufacturing defect that caused premature connecting rod bearing wear and engine seizure. While the out-of-scope failures involved in these complaints appear to have a very similar failure mechanism as the recalled engines, a thorough analysis of all available data from Honda has not indicated that the same manufacturing defect exists in the out-of-scope engines as the engines recalled by 23V-751. Based on this analysis ODI has determined that Honda has properly defined the scope of recall 23V-751. Consequently, ODI will close this RQ investigation.  NHTSA will continue to investigate these complaints of engine failure as part of a new Preliminary Evaluation Investigation (PE25008). The Agency reserves the right to take additional action if warranted by new circumstances.